Comparison

Second Brain vs Memz LLM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Second Brain

This AI-powered journal captures your thoughts via voice or text, automatically organizing and connecting them. It helps you recall memories, discover patterns, and reflect on your growth.

Highlights
  • AI classification, tagging, and summarization
  • Semantic search by meaning
  • Three-layer memory system
  • People cards for relationship tracking
  • Weekly AI reflections
  • Voice input with transcription
  • Data export (JSON + Markdown)
Features
Read full description

Most notes get written once and never read again. Second Brain reads them for you. Write a line whenever something is on your mind, and once a week it tells you what your week was really about. You don't need to keep a diary or a streak. One line a day is enough. YOUR WEEK, READ BACK TO YOU The weekly insight covers what took up your attention, what changed since last week, and one concrete thing to try. Every insight shows the notes it came from, so you can check it against what you actually wrote. Your first weekly insight is free. Once a month you get a longer read on where the month went. After your first five notes there's also a first impression of you, and it fills in as you keep writing. CAPTURE Type, or press and hold to speak. Share text, links or images from other apps, or pick screenshots and the text in them is read on your phone. Each note gets a title and tags automatically, so there's nothing to file. ASK YOUR PAST Explore searches by meaning, not only keywords. Ask "What did I decide about the move?" or "What did Anna say last time?" and get an answer built from your own notes. PEOPLE Keep a card for the people in your life: what they said, what you did together, what to bring up next time. Before you meet someone, a reminder shows your open to-dos and what you talked about last time. REMINDERS AND WIDGETS Write "dentist next Friday at 3pm" and it becomes a reminder and a checklist item. There are widgets for the Home Screen and Lock Screen, and the checklist can run as a Live Activity. PRIVACY Your notes are stored on your device. There's no account to create and no server of mine in between. To title, tag and reflect on your notes, their text is sent to a cloud AI service. If your iPhone supports Apple Intelligence, you can turn on On-Device AI and new notes are handled on the phone instead; Explore and reflections still use the cloud. Every AI result is labeled "On device" or "Cloud AI", so you can see which is which. iCloud sync is optional and uses your own iCloud account. You can export everything as JSON or Markdown at any time, for free. FREE AND PRO Free: 5 notes a day, daily reflections, your first weekly insight, and export. Pro: unlimited notes, weekly insights and monthly reads, 20 Explore questions a day, up to 30 screenshot imports a day, unlimited people, the memory graph and life themes, iCloud sync, and the Rainbow Aurora theme. Pro is a monthly or yearly subscription. The yearly plan comes with a 7-day free trial, the monthly plan with 3 days. Payment is charged to your Apple ID and renews automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Second Brain is made by one person, Lemon. Terms of Use: https://smartkiitos.com/secondbrain/terms/ Privacy Policy: https://smartkiitos.com/secondbrain/privacy/

About

Memz LLM

Read full description

Memz is your second brain — a private memory vault that lives entirely on your device. Capture anything in one tap: speak a thought and let on-device voice-to-text transcribe it, jot a note, save a photo, a screenshot, or a file. Memz reads and organizes it all into an evolving map of your memories — clusters that grow and reshape as you add more, with no manual filing. Then just ask. Memz recalls what you saved with answers grounded in your own sources, and shows the evidence behind every reply. When it doesn't actually have the answer, it tells you — instead of making something up. PRIVATE BY DESIGN - Everything stays on your phone. No account, no sign-up, works fully offline. - On-device processing — your memories are never required to leave your device. - Sensitive memories (Care and Secret) are locked behind an unlock step and kept out of everyday search. YOU OWN YOUR DATA - Export anytime to Obsidian-compatible Markdown. - Delete derived data only, or wipe everything — your call. WHAT YOU CAN CAPTURE - Voice notes with on-device transcription - Text notes and quick thoughts - Photos and screenshots, with on-device text recognition - Files and documents HOW MEMZ ORGANIZES - An evolving ontology groups related memories automatically - Review, merge, or split clusters as your thinking changes - A visual map shows how everything connects ASK YOUR MEMORY - Source-grounded recall with evidence for every answer - Scope your question; private categories stay excluded by default - No evidence, no guess — Memz refuses rather than inventing No subscriptions required. No data harvesting. Just your memory — organized, private, and yours.

Screenshots

Second Brain4 screens
Memz LLM4 screens

Verdict

The call

The clearest difference is in-app purchases: Memz LLM at none against Second Brain's 2. Memz LLM also leads on update cadence (every 3 days vs every 9 days) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Second Brain sells 2 in-app purchases, starting at $4.99 per month. Memz LLM asks for nothing beyond the download.

UpkeepUpdate frequency

Second Brain ships an update every 9 days, Memz LLM every 3 days. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

Scorecard3 real differences · 7 level
Second Brain versus Memz LLM: the parameters behind the verdict, then further details
ParameterSecond BrainMemz LLM
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 9 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size12 MB28 MB
Age rating4+4+
DeveloperLiwei XieAppBridge Inc.

In-app purchases

2 purchases

Second Brain

Subscriptions2
  • Second Brain Pro3 Days trial$4.991 Month
  • Second Brain Pro7 Days trial$39.991 Year
None

Memz LLM

No in-app purchases

Questions

Is Second Brain free?
Second Brain is free to download, with in-app purchases available.
Is Memz LLM free?
Memz LLM is free to download, with no in-app purchases.
Do Second Brain or Memz LLM have ads?
Neither Second Brain nor Memz LLM shows ads.
Which is updated more often, Second Brain or Memz LLM?
Second Brain ships an update every 9 days, and Memz LLM every 3 days. Most recently, Second Brain was updated on October 10, 2026 and Memz LLM on October 2, 2026.

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